Fuse-plug



PatentedAp r. 6, 1920 E. G. K. ANDERSON.

FUSE PLUG.

APPLICATION.FILED MAY 8, 19:5. RENEWED APR; 24. ms

ERNST G. K. ANDERSON, 8F CHIC.&GO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTREG ELLEN DIS, 4%. COEPOEATIQN the ZLLINQIFS.

sh-urine.

Application filed May 8, 1915, Serial No. 26,762.

To aZZ whom it may concern: I

Be it known that LEnnsr G. K." Anna.- SON, a citizen of the United States, residing at Chicago, in the county of Cool. and State of Illinois, have invented new and useful Improvements in Fuse-Plugs, of which the v following is a .tulhclear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification. o

l ly invention relates to fuse plugs.

Among the objects of my invention is to provide a fuse plug which shall be simple in construction and eihcient in use.

Further objects will appear from the detailed description to follou and from the ap-' pended claims.

In the drawings, in rvhichl have illus tratcd an ernhodiment/oi my invention Figure 1 is a side elevation of a fuscplug, part of the insulating hand being broken away to show the split shell portion;

Fig. 2 is an axial section of the plug show-, ing the manner in which the fuse carrier is detachahly held in the shell;

Fig. 3 is a section on the line 3-3 of Fig. 2, shaming the arrangement or" the fuses and center contact; and

Fig. l is a section on the line 4- 4 of Fig. 9., showing the inter-engaging positioning means on the carrier and shell.

Ifieferring now to the drawings in detail. the plug comprises a threaded contact shell for engagement with the threaded contact of a receptacle, an insulating cap or button 11 secured to the shell 10, a center contact 12 supported by the cap 1. a fuse carrier 13 rotatably mounted in tv e contact 10, a plurality ofiuses 14 supported by the car rier l3, and a thumb piece 15 secured to the carrier for rotating the latter to bring the diii'erent fuses into electrical connection with the center contact 12. The center contact i2 is electrically connected to the fuses through acconduetor 15 which is held on the cap 11 and electrically connected with the contact 12 hv means of a hollow rivet or eyelet 17. The lower end of the conductor 16l5 cnt outwardly as shown at l to form a contact for engagement with the upper ends of the fuses which are seated in openings 19 extending through the carrier 1 The upper ends of the fuses id extend into and are secured to eyelets 20 in suitable manner, which eyelets extend Specification of Letters Patent.

".sition Within the shell 10.

Patented Apr. h, 319%).

:Etenewcd April 24 1918. Sci-iii No. 230,810,

dhwnwardly into the openings 19* and are flanged over their upper edges, as shown at21, for engagement with a plate of mica or other suitable material, hold the plate in place on the carrier 13. The lower 6Q portion of the shell 19 is split in several places as shown at 23 (.l igs. l and a) whereby spring tongues are provided to hold the carrier 13 in position Within the shell 10. The thumb piece 15 comprises an insulating Washer 25 having an opening 26 therein through which extends a neck portioii 27 formed integral with the conducting member 28 which electrically connects the fuses i l with the shell contact 10, the neck portion 27 being flanged over, asshown at 29, beneath the insulating Washer 25 to hold the latter in position. The conducting member 28 has an annular portion 30 extending upwardly therefrom for snap en gageinent with the spring tongues 24, as clearly shown in Fig. 2, whereby the carrier is rotatably and detachably held in po- The lower portion of the carrier is slightly enlarged as 59 shown at 31., and the upper er ire oi the 311-; nular portion 30 is' flanged tnereover, shownat-Sl, to securely hold the conducting meniber 28 on the carrier. A plate 32 of mica or other suitable insulating niate- 5' rial is placed beneath the Washer 25 and is held thereon by means of a retaining inerrber 33 having an annularportion 3e surrounding the washer do which portion is flanged over as shown at 35 to securely hold so. the retaining member and inica plate in position on the Washer 25.

The annular portion 34: may he milled, if desired, as shown at 36 to form a suitable gripping surface. One of the tongues 9A is struck inwardly to "form a-projection 37 for engagement with the depressions 38 (Fig. 4) in the annular portion 3.0,"the re lation of the depressions and the "fuses 14 beiilg such that when the projection 10c engages one of the depressions 38 one of the fuses ll will he in electrical connection with the'center contact 152,.

The use and operation of my improved plug is as follows: lVhen the plug is screwed into the receptacle the circuit through the plug is from the center contact 12, through the eyelet 1T, conductor 16, fuse 14;, and conducting-member 28, to the shell contact 10. In e so one of the fuses no is blown the carrier 13 is rotated by means of the thumb piece 15 to bring a new fuse into electrical connection with. the center contact 12, the projection 37 on the shell 10 engaging one of the depressions in the annular portion 30 to properly position the carrier. After all of the fuses have been blown the carrier may be removed from the shell 10 by simply pulling outwardly on the thumb piece 15, the spring tongues 24 yielding to permit the carrier to be with.- drawn. The shell 10 may he left in the receptacle and a new carrier inserted in the old shell.

It will be noted that the lower ends of the fuses 14 will be visible through the transparent mica insulation 32 so that it can. be determined, by inspection, when the fuses have been blown.

Having thus dcscribedmy invention what ll claim as new and desire to secure by Letters Patent is 1. A. multiple fuse plug comprising a shell contact, and a center contact at one end of said shell contact, a plurality of fuses, and a fuse carrier for said fuses insertible with in said shell contact at the end opposite said center contact and movable to different positions to bring the different fuses successively into circuit.

2., A multiple fuse plug comprising a shell contact, and a center contact at one end of said shell contact, a plurality of fuses, a fuse carrier for said fuses insertible within said shell contact at the end opposite said center contact and movable to different positions to bring the different fuses successively into circuit, and means for detachably holding said fuse carrier in said'shcll contact.

3. A multiple fuse plug compriing a shell contact, and a center 'conta'ctlat one and of said shell contact, a pluralIty of fuses, a fuse carrier for said fuses iusertible within said shell contact at the end opposite said center contac" and means for detachably and rotatably holding said fuse carrier in said shell contact.

A multiple fuse plug comprising a shell contact, and a center contact at one end of said shell contact, a plurality of fuses, a fuse carrier for said fuses insertible within said shell contact at the end opposite said center contact and movable to different positions to bring the different fuses succcssively into circuit, and yielding means for detac'hably holding said fuse carrier in said shell contac 5. Amultiple fuse plug comprising a shell contact, a center contact, a fuse carrier rota-' tably innunted in said shell contact, a plurality of fuses supported by said carrier, and means including a contact located cccen trically with respect to the axis of said fusecarrier and electrically connected to said issuer 1 center contact whereby as said carrier is rotated the different fuses will be brought successively into electrical connection with said center contact.

6. A multiple fuse plug comprising a center contact and a shell, one portion of which forms a contact for engagement with the shell contact of the socket, and another portion of which is split to form spring tongues, a plurality of fuses, and a fuse carrier for said fuses insertihle within said shell and held therein by said spring tongues.

7. A multiple fuse plug comprising a ccnter contact, and a shell, one portion of which forms a contact for engagement with the shell contact of a socket, another portion of which is split to form spring tongues, a plu rality of fuses, and a fuse carrier for said fuses insertible within said shell, said fuse carrier having an annular portion engaging said spring tongues to hold the carrier ro tatably in said shell,

8. A multiple fuse plug comprising a center contact, and a shell, one portion of which forms a contact for engagement with the shell contact of a socket, another portion of which is split to form spring tongues, and a fuse carrier inscrtiblc within said shell, said fuse carrier having an annular portion engaging said spring tongues to hold the carrier rotatably in said shell, said annular portion having circumfcrcntially spaced positioning means, and said split portion having positioning means coiiperating with said first positioning means, and means wh erebv said carrier is rotated the different fusch will be brought successively into the circuit.

9. A multiple fuse plug comprising a cen ter contact, and a shell, one portion of which forms a contact for engagement with the shell contact of a socket, another portion of which is split to form sprin tongues, and a fuse carrier insertiblc within said shell, said fuse carrier having an annular portion engaging said spring tongues to hold the carrier rotatably in said shell said annular portion having a plurality or circuue ferentially spaced depressions and said split portion having a projection engaging said depressions to posltion the carrier, and

means whereby as said carrier is rotated the different fuses will be brought successively into the circuit.

10. A; multiple fuse plug comprising a threaded shell contact, a cap thereto at one end thereof, a center contact supported by said cap, a plurality of fuses, a fuse carrier for said fuses insertihle within said shell contact at the end opposite said center contact, yielding means for detachably and rotatably holding said fuse carrier in said shell contact, and contact-making means whereby as said carrier is rotated the different fuses will he brought successively into the circuit,

11. A multiple fuse plug comprising a shell contact having an annular contact portion, a fuse carrier rotatably mounted in said shell contact, a plurality of fuses supported by said carrier, means whereby all of said fuses are in electrical connection with said annular contact portion, and contact making means whereby as saidcarrier is rotated the different fuses will be brought successively into the circuit.

12. A. multiple fuse plug comprising a shell contact having an annular contact portion, a fuse carrier rotatably mounted in said shell contact, a plurality of fuses supported by said carrier, means whereby all of said fuses are in electrical connection with said annular contact portion, said means including a contact slidably engaging said annular contact, and contact-making means whereby as said carrier is rotated the different fuses will be brought successively into the circuit.

13. A multiple fuse plug comprising a shell contact having an annular contact por tion, a fuse carrier rotatably mounted in said shell contact, a plurality of fuses supported by said carrier, means whereby all of said fuses are in electrical connection with said annular contact portion, said means including an annular sheet metal con tact surrounding the end of said carrier and rotatably engaging said first annular contact, and .contactmaking means whereby as said carrier is rotated'the different fuses will be brought successively into the circuit.

14. A multiple fuse plug comprising a shell contact having an annular contact portion, a fuse carrier rotatably mounted in said shell contact, a plurality of fuses supported by said carrier, and means whereby all of said fuses are in electrical connection with said annular contact portion, said means ineluding an annular sheet metal contact surrounding the end of said carrier and rotatably engaging said first annular contact, a thumb piece for rotating said carrier having an opening therein, said second annular sheet metal contact having means integral therewith and extending into said opening for securing the thumb piece to the carrier.

15. A multiple fuse plug comprising a shell contact and a center contact at one end of said shell contact, a plurality of fuses, a fuse carrier for said fuses insertible within said shell contact at the end opposite said center contact, means for detachably and rotatably holding said fuse carrier in said shell contact, and a thumb piece secured to said carrier for rotating it, and contact-making means whereby as said carrier is rotated the difierent fuses Will be brought successively into the circuit.

16. A multiple fuse plug comprising shell and center contacts, a plurality of fuses, and a fuse carrier for said fuses movable to different positions to bring the diflerent fuses into circuit, said fuse carrier having a snap connection with respect to said shell contact.

17. A multiple fuse plug comprising shell and center contacts, a plurality offuses, and a fuse carrier for said fuses insertible within said shell and movable to different positions to bring the different fuses successively into circuit, said fuse carrier having a snap connection with respect to said shell contact.

18. A multiple fuse plug comprising a shell contact and a center contact at one end of said shell contact, a plurality of fuses, and fuse carrier insertible within said shell contact atthe end opposite said center contact and movable to different positicns to bring the different fuses successively into L uit, said fuse carrier having a snap connection with respect to said shell 7 contact.

19. A fuse plug comprising-a plug-in portion having an insulating base and a contact supported thereby for engagement with a receptacle contact, a fuse support comprising an insulating base, a plurality of fuses supported thereby, and a quick-detachable connection between said plug-in portion and said fuse support.

a plurality of fuses, and a fuse-carrier for said fuses having a quick-detachable con-- nection with said plug-in portion, said fusecarrier being capable of quick detachment with respect to said plug-in ortion when said plug-in portion is positioned in the receptacle.

In Witness whereof I scribed my "name.

Bauer c. K. aunnnsou.

have hereunto sub-- 

